Is the tide turning in the favor of activist shareholder Elliott Management Corp. in its drive to clean up the web of more than two dozen auto-related companies at the core of the Hyundai chaebol? On Wednesday, South Korean media reported that the group may cancel a central part of a restructuring plan that’s been opposed by Elliott, in the form of the planned merger between its logistics business Hyundai Glovis Co. and the after-sales division of parts supplier Hyundai Mobis Co. The company batted down the reports but shares in Mobis and…